Loading machine



A @@@o 9 R923., 3R. P. GREENLEAF LOADING MACHINE Filed April 16. 1920 4 Sheds-Sheet 5 A FQ y. Mw@ '-MWMWW 3194779754 R. P. GREENLEAF LOADING MACHINE Filed April le. 1920 4 shemsnshwc 4 f aerea@ Deere, reza, y' i lti'ld `iTED maaar r. canaux.

'y errar carica.

, or CLEVELAND, omo, essrenea 'ro realta arLLrn'es, or

CLEVELAND, omo. l

lanonieme iii/incarna.

application nea april 1e, ieao. serial no. amaze."

To aZZ whom it may camera: and to the desired amounts to produce Be it known that I, ROBERT P. GREENLEAF, efficiency in action. n

a citizen of the United States, residing at "lheinvention may be briefly summarized 55 Cleveland in the county of Cuyahoga and as consisting incertain novel details of con- El Stateof hio, have inventeda certain new struction and combinations and arrangeand useful Improve-ment in Loading Ma` mentsof parts which will be described in the chines, of which the following is a full, specification and set forth in the appended clear, and exact description. l claims. 60

' The present invention relates to a loading lin the accompanying sheets .of drawin l@ machine of the type having a shovel whic Fig. 1 is a side view of the machine with tige is designed to be given a filling stroke or rear part of the conveyor omitted; Fig. 2 is movement at the front of the machine and a top plan View of the machine omitting the then to be swung upwardly and rearwardly conveyor and receiving hopper therefor, but 65 y over the machine to dum ing position. illustrating the shovel actuating mechanism;

' BU rEhe princi al object o the invention is Fig. 3 is a rear end view omitting the cony to provide a ceding machine with a shovel lveyor; Fig. 'f1 is a transverse sectional view for scooping up a oad and swinging 1t to substantially along the line 4.--4 of Fig. l; discharging position, and with a conveyor Fig. 5 is a cross-sectional view substantially 70 having its receiving end located well foralong the line 5--5 lot Fig. 2 looking in the 20 ward of the machine so that the rear stroke direction indicated by the arrows; Fi 6 is a of the shovel will not be excessive. sectional view substantially along t e line A further object is to provide means 6-6 of Fig. 2 looking in the .direction indiwhereby when the shovel is swung upward cated by the arrows; Fi 7 is a front view 75 l the shovel will be tilted with reference to the of the machine; Fig. 8 is a ldetail sectional shovel supporting arms so as to minimize lView of one of several'clutches used in the head room occupied by the swinging mechamachine; Fig. 9 is a plan View of the manism when at its highest point. chine on a reduced scale; and rFig. 10 is a Still further the invention aims to so reare-nd view of a portion of the machine 90 mount the conveyor that the rear part may `illustrating the manner in which the rearbe swung about the axis of the forward end wardly projecting part of the conveyor is thereof, orV of a receiving hopper associated adapted to be supported onV the main frame. therewith,'and to' arrange `the conveyor and Referring now to the drawings it will be turntable which carries the operatin parts seen that the machine includes a wheeled 95 to swing about coincident axes so t at the truck 1Q, adapted to run along a track such conveyor can be arran ed to discharge into as indicated at -11', which track may be ina cars, no matter how t ey are located with mme. Rotatably supported on the frame of reference tothe machine, and without affect-l the truck to turn about an axis 12, 1s a ing or being affected by the movements of rotary superstructure or turntable 13 carry- Wi v the turntable, thus enabling'the machine to ing all the operating parts of the machine,

40 work effectively whenr positioned on the which turntable is supported on the truck curve of a track, and allowing the cars to be through rollers 14. 0n opposite sides of the filled if the machine is'on a straight track turntable are a pair of guideways 15, (see and the cars are not directly vbehind the particularly Fig. 4) for a forwardly and will machine. rearwardly movable ram 16 which supports Additionally the invention aims to proa shovel 17 mounted thereon in a manner to vide an improved mechanism for actuating be hereinafter described. The rear part of the shovel, i. e. for giving it its lling and the ram has rollers 18 .designed to travel dumping' movements with an actuating back and forth in the guideways 15 while mi@ mechanism employing 'a single motor, tothe forward part of the ram is supported im, gether with means by which straight line on a pair of shrouded pinions 19 which are and' tilting movements can be imparted to mounted on. a shaft 20 at the front part of 'the shovel either separately or simultaneously the turntable (see Fig. 7 and engage racks 2l carried by the ram, and when rotated, move the ram backward or forward.

The shovel 17 is connected to the ram by two pairs of arms. One pair of arms 22 which support and actuate the shovel are pivotally connected at 23 -to opposite sides of the shovel, and are pivot-ally 'connected at 24 to the sides of the rainnear the forward end of the latter, said arms having in this instance, concentric with their pivotal axis 24, rope segments 25, the purpose of which will be subsequently explained. The other pair of arms which control the tilting of the shovel with reference to the arms 22 are secured to opposite sides of the shovel. The inner ortions of these arms are adapted to slide fiecly in members 27 pivoted to turn on pins 28 sup )orted partly by the ram and partly by brac iets 29 which are secured to the ram about midway between the ends thereof.

The shovel is adapted to be moved forwardly with the'ram to receive a load, and when retracted, to be swung upwardly to upper dotted position, indicated in Fig. 1, so as to discharge the material into a hopper 30 supported at the top of the machine. This hopper which has a frustro-conical front portion and rearwardly extending side portions` is carried on a conveyor frame 31 having an endless conveyor 32 by which the material is conveyed from the hopper to the rear ofthe machine and discharged into cars. The hopper and front part of the conveyor frame are supported on the turntable 13. and are connected thereto pivotally by a king boltl 33 or equivalent pivoting device, the axis of the latter coinciding with`the axis of movement of the turntable on the truck.

The rear end of the conveyor frame ex-v tends beyond the rear end of the truck 10, and it is supported on the rear upward extension 34 of the truck frame through the medium of rollers 35. These rollers are adapted to bear on an arc-shaped track 36 carried on the upper rear frame extension 34 to which the conveyor may be secured in any desired position with respect to the truck frame by a pin 37 which is carried by the con\'eyor frame, and is adapted to be inserted in any one of the series of holes 38 with which the track 36 is provided, as clearly shown in Figs. 2 and 10. Thus the conveyor as a whole, and the hopper can be turned about the front pivotal axis 33 so that the rear end of the conveyor will discharge material into receiving cars though they may not be directly behind the machine. Furthermore, it will be apparent that due to the manner in which the conveyor frame and hopper are supported at their front ends the turntable can be swung about its pivotal axis .12 without affecting the position of the conveyor frame. The conveyor can be actuated in any suitable manner as by means of a shaft 39 driven by a motor 40 and supported on the conveyor frame as indicated in Fig. 1.

Power for actuating the rain, for swinging the shovel, and for turning the turntable is in this instance derived, from a single motor 41 mounted on the rear part of the turntable, which motor may be a rotary, electric or other suitable continuously operating motor. The mechanism by which movements are imparted either simultaneously or separately to the several elements of the machine from this single motor forms an important part of the present. invention, and this will now be described. By reference particularly to Fig. 2 it will -be secu thatA the motor 41 drives a forwardly extending shaft 42,' on which are secured, a suitableA distance apa-rt, two actuating pinions 43 and 44. Mounted on the turntable alongside this shaft 42 are three shafts 45,

`verse shaft 50, on the ends of which are a pair of rope or cable `drums 51 adapted to accommodate cables. indicated at 52 in Fig.

1, which cables in this instance extend from the lower sides of the drums under sheaves 53 carried by the ram and then around thc segments 25 to which they are attached, which segments are attached to, or form part of the shovel actuating arms 22. The third shaft 47, has its rear end connected by worm gearing 54 to a short vertical shaft 55 providedl at its lower end '(see Fig. 3) with a pinion 56 which engages a segmental rack 57 on the truck frame beneath the turntable so that by the rotation of this shaft 47 in one direction or the other. the turntable and all parts carried by 'it will be swung about the pivotal axis of the turntable in order that material may be scooped up by the shovel at either point of the machine.

On the shafts 45, 46 and 47 I provide gears 58. 59 and 60, which gears are arranged opposite the motor driven gear 43. The gears 58 and 59 both engage the gear 43, and the gears 59 and 60 mesh with each other so that the gears 53. 43, 59 and 60 are driven as one train, or in unision as long as the motoris in operation.

Forwardly of the gears 58, 59 and. 60 l provide on the three shafts three gears 61, 62 and 63, the gears 62 and 63 being in driving engagement, and beneath the motor driven shaft `42 I provide a long gear 64 which is in engagement with the motor driven gear 44 and with the two gears 61 and 62. In consequence, as long as the motor is in operatiomthe gears 61, 62 and 63 will be anar-,eea

- in the reverse direction to the other gear on on shaft 45 will be driven in opposite directions, and the same is true of gears -59 and 62 on. shaft 46, and gears 60 and 63 on shaft 47.

Additionally I provide on each shaft soV as to be driven by the oppositely rotatinjg gears 58 and 61, 59 and 62,v and 60 and 63, cone clutch elements 65 and 66, and on each shaft between these two clutch elements l provide a shiftable clutch element 67 adapted to be shifted either into engagement with the clutch element `65 orthe clutch element'66. This middle clutch element may be moved axially of the associated shaft by suitable means such as a rod 68 extending endwise for a distance through the shaft and provided at its end with a shifter ring 69 which can -be engaged by a part controllable from any desired part of the machine.

In this instance the inner end ofthe rod 68 which extends axially of the shaft 45, 46 or 47 is connected to a transverse piece 70 which is connected to the middle clutch element 67, and movable back and forth in a slot of the] shaft. v

It. will be seen therefore, that 'when the middle clutch elements 67 are in neutral position, themotor 4l can be operated continuously without imparting movement to the ram, shovel or turntable, the gears 58, 59, 60 and 61, 62 and 63, and the clutch elements 65 and 66 then rotating idly, the parts of one set rotating oppositely to the corresponding parts of the other se To operate the machine, assuming that the ram is retracted and the shovel is lowered,

at which time the point or digging edge of the shovel may be resting directly on the ground, theoperator by shifting in the right direction the middle clutch element 67 on shaft 46, gears the motor shaft to the front cross shaft 20. This causes the ram and shovel to be moved outwardly. At the same time the operator shifts in the right direction on shaft 45 the middle clutch element 67 so as to ca-usethe-rear cross shaft 5() to bel-otated in a direction such that the cables 52 will be paid out. and. thus not exert lifting action on the shovel. At or near the end of the forward stroke of the ram, which stroke can be las long as desired within the limits of the machine, the operator will unclutch the drum shaft 50, and due tothe fact that self-locking worm gearing is employed f in every instance in this machine, the Shovel will be elevated iff the forward movement of the ram is continued after the unclutching referred to. This may be done for the purtion, wind up the cables and elevate the -U 1 shovel independently of the ram movement. the same shaft, thatis to say, gears 58 and 61 When'the shovel is loaded either with or without elevating it od the ground, the ram 1s retracted by reversmg the ram clutch on shaft 46, and at the same time the drumthis is to swin the shovel upwardly until.

dumping positlon is reached, the tilting arms 26 then swinging the shovel somewhat with reference to the shovel arms 22. When dumping position is reached, the material is discharged into the hopper 30 and the swinging movement of the shovel is stopped either manually or automatically. In the latter l event, any suitable means will be provided for automatically throwingl out the clutch controlling the drum shaft when the shovel reaches dumping position.

Then the clutch onf'shaft 45 controlling the drum shaft is reversed, and this rotates the drum shaft in the reversel direction to that in which it was previously rotated, paying out the cables, and allowing the shovel to swing' back to its lowered position in front o-f the machine. If desired, spring buffers or equivalent devices may be utilized -to check and stop the upward movement of the shovel, and to start the shovel on its downward swing independently of the movement which is imparted by the force of gravity. lt may be desired that the shovel be swung upward to a point suchy that the center of gravity passes beyond the pivotal axis of the shovel arms on the ram, in which event the shovel would not swing by gravity and buders or equivalent devices would be necessary. Y

rThus the operator by shifting the clutches on the shafts 45 and 46 is enabled to load material which is in fro-nt of the machine into the overhead hopper, and from this hopper it will be conveyed by the conveyor and discharged into cars more or less to the Y rear of the machine, though as before stated` it is not essential that these cars be directly behind the machine, but the rear end of the conveyor can be swung laterally, and since the front end of the hopper is frustro-conical, the material will be received in the hopper when the shovel is in dumping position regardless of the angle to which the conveyor is turned.

When the operator desires to reach material at either side of the machine, he operxates the clutch on shaft 47, turning the turntable in the direction and to the extent desii-ed. lt shouldbe noted that though the lili) rie rae

charge of material from the shovel to the hopper, this being due to the fact that the turntable and conveyor are mounted to turn on coincident axes, and also to the fact that the axis of movement of the turntable coincides with the axis or center of the conical portion of the hopper.

While I have shown one embodiment of lmy invention, thatbeing a simple onel which l vspeed of the cables which actuate the shovel can be employed to advantage, it may be desirable for, mechanical reasons to depart somewhat from the construction shown. For example, while it is essential that the typefof machine herein disclosed that the arms and shovel, and the speed of the ram be the same, when the ram is moved back and forth in order that the shovel may be retained in a fixed .relation to the moving arm when desired, nevertheless it is not essential that thecables be connected to the shovel arms directly, or if directly attached, that they pass around arc-shaped segments as herein i lustrated. It might be desirable, and it would be perfectly feasible to employ elliptical or eccentric segments for the purpose of getting the greatest power at the time of the greatest resistance to movement of the shovel, or if desired, the power exerted by the cables could be transmitted to the shovel arms through power multiplying gearing so as to avoid the necessity of a large actuating motor.

Having described my invention, I claim:

l. In a loading machine, a frame, a ram guided on the frame for substantially horizontal movement forwardly and rearwardly, a shovel pivotally connected thereto, and a motor having independent mechanical connections with the ram andshovel for movit, and a drum for winding in and paying out the cable as the ram. is moved in and out, at the same speed' that the ram is moved.

3. In a loading. machine, a. frame, a ram movable forwardly and rearwardly with respect thereto, a shovel pivotally connected to the ram sothat it may be swung upwardly over the machine to dumping position, powerpperated means for shifting the ram, a cable operativelyconnected t0 the shovel for swinging or rotating it, a drum shaft for paying out and windin in the cable, and `power operated means or rotating the drum shaft so that the cable may be paid out or wound in as the ram-is moved.

' 4. In a loadinfr machine, a frame, a ram movable forwardrly and' rearwardly with respect to the frame, a shovel pivotally connected to the ram so that it may be swung upwardly over the machine to..dumping osition, a drum shaft on the frame, a ca le connected to the drumv shaft and to the shovel, a motor on the frame and connections between the motor and the ram and the drum shaft.

5. In a loading machine, a frame, a ram movable forwardly and rearwardly with respect thereto, a shovel `pivotally connected to the ram so that it may be swung upwardly over the machine to dumping position, a motor mounted on the frame, power operated means adapted to be mechanically connected to the motor for shifting the ram,a

fcable operatively connected to the shovel for swinging it, a drum shaft and drum mounted on the frame for paying out and winding in the cable, power operated means -adapted to be, connected to the motor for operating the drum shaft, and clutches by which the first and second ope-rated means may be controlled at will. y

6. In a loading machine, a frame having a turntable, a ram mounted on the turntable,

a shovel pivotally connected to the ram so v that it may be swung upwardly 'and downwardly with respect thereto, and a conveyor having its receiving end at the top of the machine and connected to the turntable on an axis coincident with the axis of connection between the turntable and frame.

7. In a loading machine, a frame, la turntable on the frame adapted to .swing about a vertical axis, a ram movable forwardly and rearwardly with respect tothe turntable, a shovel pivotally connectedto'the ram so that it may be swung upwardly and downwardly with respect thereto, a conveyor extending 'over the machine yand having a receiving hopper whose front end is circular, the axis of the circular part coinciding with the axis of movement of the turntable whereby the shovel may be swung upwardly and will discharge material into the hopper irrespective of the position of the turntable.

8. In a loading machine, a frame, a turntable adapted to be turned on a vertical axis, a shovel, means for supporting and operating it so that it may be filled at the front of the machine and may then be swung upwardly to dumping position, a conveyor at the top of the machine and having its discharge end at the rear thereof and its receiving end over the turntable, the rear part Mtl of the turntable being laterally movable about the axis of movement of the turntable.

Lavar/c4.

` ing pivotally connected to the turntable on an axls coincidin with the pivotal connection of the turntab ewith the frame.

10. In a loading machine, a frame, a turntable mounted on the frame to tlurn about a vertical axis, a shovel supported from the turntable so that it may be swung upwardly to dumpingwposition, a conveyor having; its rear end beyond the rear end of the frame and havno` its receiving end over the turntable, the

axis coinciding' with the pivotal connection of the turntable with the frame, and means brward end of the conveyor being i pivotally connected to the turntable on an.

for supporting the rear part of the conveyor on the frame independently bof the-turntable.

11. In a loading machine, a frame, a turntable mounted on'the frame to turn about a vertical axis, a 'shovel pivotally supported from the turntable so that it may be swung upwardly to dumpingr position, a conveyor having its rear end beyond the rear end of the frame andt having its receiving end over the tunntable, the or\\'ard"en l ot thelconveyor being pivotally connected tothe turntable on an axis coinciding with the pivotal connection of the turntable with'the. frame, the rear part of the iframe having,` an upward extension at the rear of the turntable, said extension having a portion of thevconveyor supported thereon.

ln testimony whereof I hereunto afiix my signature.

ROBERT P. GREENLEAF. 

